I prefer traditional because of how easy you can make things work, you can increase or decrease things with more subtlety than that of a computer, however, the precision that the computer provides for finished artwork is amazing. There is a trade-off somewhere between the two, but you need years more practice. Thankfully, because people love to do traditional work heaps, lots of research has gone into making a tablet that works much like you'd use a normal pad and pencil.